What does this research mean for the field?

Multiple interacting defects in sandstone dictate distinct dynamic stress-strain responses and fracture characteristics under dynamic loading, with complex discontinuities significantly weakening energy storage capacity and enhancing energy dissipation. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

Investigate dynamic stress–strain behaviors, crack coalescence mechanisms, and energy partitioning in sandstone specimens featuring multiple interacting holes and flaws.

August 28, 2026Rock Mechanics and Rock EngineeringOpen Access

Experimental and Numerical Studies on Dynamic Response and Fracture Characteristic of Sandstone with Multiple Defects

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Authors

ZDZeng DingMonash University PJPei-Qi JiAnhui University of Science and Technology QZQianbing ZhangMonash University

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Implication

Experimental and numerical study reveals fracture evolution and energy dissipation in sandstone with interacting defects, highlighting mechanisms for underground hazard prevention.

Key Points

Investigate dynamic stress–strain behaviors, crack coalescence mechanisms, and energy partitioning in sandstone specimens featuring multiple interacting holes and flaws.
Tested five distinct defect configurations under dynamic loading: intact rock, single hole, single flaw, intersected hole–flaw, and independent hole–flaw.
Combined dynamic physical testing via triaxial Hopkinson bar (Tri-HB) apparatus with quantitatively validated continuum-discrete coupling numerical simulations.
Intersected hole–flaw configurations accelerated crack coalescence, whereas independent hole–flaw arrangements promoted seismic isolation and enhanced energy dissipation through damping and fragment motion.
Mesoscale failure followed a progression from shear triggering to tensile crack propagation and global structural instability, driven by force chain disturbances and local vortex-like velocity fields.
Linear strain energy remained the dominant energy storage pathway, but complex discontinuities reduced overall storage capacity while increasing frictional sliding and damping dissipation.

Cite This Study

Ding et al. (2026) studied this question.

synapsesocial.com/papers/6a91467bd15324a1df3aa284 https://doi.org/10.1007/s00603-026-05776-6

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Implication

Experimental and numerical study reveals fracture evolution and energy dissipation in sandstone with interacting defects, highlighting mechanisms for underground hazard prevention.

Experimental and Numerical Studies on Dynamic Response and Fracture Characteristic of Sandstone with Multiple Defects

Discussion

Member takes

Implication

Key Points

Cite This Study

Experimental and Numerical Studies on Dynamic Response and Fracture Characteristic of Sandstone with Multiple Defects

Discussion

Member takes

Implication

Key Points

Cite This Study

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